Read the following passage:
In contemporary architectural acoustics, active noise control (ANC) systems mitigate low-frequency background noise by emitting anti-noise acoustic waves. Unlike passive acoustic treatments—such as fiberglass baffles or thick carpeting, which absorb high-frequency sounds by converting acoustic energy into microscopic thermal energy—ANC systems rely on destructive interference. Microphones detect incoming low-frequency sound waves, and a digital signal processor instantly generates a sound wave with the exact same amplitude but an inverted phase. When the original wave and the synthesized inverse wave collide, they effectively cancel each other out. However, while ANC excels at neutralizing steady, continuous hums from HVAC equipment or generators, it struggles to process and negate sudden, unpredictable acoustic transients like dropping objects or human speech.
Evaluate the following statement:
Active noise control technology is highly effective against the persistent droning of ventilation machinery, but it is inadequate for silencing abrupt, intermittent noises.
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